UPDATE: As of 9pm UK time Facebook is back online, having been offline for around half an hour.
Original story: Facebook is down on the web and mobile apps in several parts of the world, as users are all greeted with the increasingly familiar error page.
The billion-member social network went down at approximately 8:30pm UK time and as we write Mobile Choice and our staff are unable to get online. Users in the UK, US and other countries are all reporting that the service is down.
A Twitter search reveals that many users are suffering the same problem. Facebook is yet to comment on the outage.
For some users this is the second major outage for Facebook this month, as the site was unavailable for about an hour on 1 August.
Amusingly, websites like DownRightNow which say when sites are unavailable, were also knocked offline by Facebook users eager to check the site's status.